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Passage Ten Scientists have been finding evidence of life inside meteorites for well over 100 years — that, or the building blocks of life. The claims of life have proved false every time. It always turns out to be a wishful interpretation of chemicals, minerals and tiny structures inside the meteorite that could be the fossilized long-dead bacteria — but almost certainly aren’t.
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Passage Four Most mammals can sprint faster than humans— having four legs gives them the advantage. But when it comes to long distances, humans can outrun almost any animal. Because we cool by sweating rather than panting, we can stay cool at speeds and distances that would overheat other animals.
A．从下列单词中选择恰当的词填空，每个词只能用一次。 People traveling long distances 51 have to decide 52 they would prefer to go by land, sea, or air. 53 anyone can positively enjoy sitting in a train for 54 than a few hours. Train compartments soon get cramped and stuffy. It is almost impossible to take your mind 55 the journey. Reading is only a 56 solution, for the monotonous rhythm of the wheels clicking on the rails soon lulls you to sleep. 57 the day, sleep comes in snatches. At night,when you really wish to go to sleep, you rarely 58 to do so. If you are lucky, enough to get a couchette, you spend 59 the night staring at the small blue light in the ceiling, or fumbling to find your passport when you 60 a frontier. Inevitably, you arrive at your destination almost exhausted. 56()
Passage One From time to time, we need an expert. In such situations, the Internet has been like a gift from the gods. In the old days, authorities were near at hand for expert advice: the village seamstress on how to make a buttonhole, the blacksmith on how to take care of a horse’s hooves, or the apothecary on what to do about warts. On the Internet, advice and answer sites are popping up all over the place, with self-proclaimed experts at the ready. Exp.com claims to have “tens of thousands of experts who can help you,”while the more restrained Abuzz.com, owned by The New York Times, limits its pitch to “Ask Anything! Real People. Real Answers.” It’s said that expert sites or knowledge networks represent the latest stage in the Internet’s evolution, a “democratization of expertise.” However, if your question is about something other than “Who invented the light bulb”, the answers are likely to be a wild potpourriof personal opinions. Top colleges and universities are rushing into online education, but the big news is the proliferation of a new breed of for-profit online institutions bringing Internet education to the masses.“The Internet will probably be the single most democratizing force in education,” says Columbia Business School Dean Meyer Feldberg, who envisions educational programs being routed through the net to hundreds of millions of people. The largest online institution is the University of Phoenix, with some 6,000 students today and hopes of reaching 200,000 students in 10 years. The university offers bachelor’s, master’s, and doctoral degrees in business management, technology, education, and nursing. The university notes that its degree programs cost far less and may take some students far less time to complete. On the other hand, a Business Week survey of 247 companies found that only a handful would consider hiring applicants who earned their MBA degrees online.Whether that will change as for-profit online universities improve their offerings and graduates prove their worth-is anyone’s guess. The rest of the world is moving into cyberspace more slowly than the United States, and, in the developing world, the Internet has hardly penetrated at all. UN Secretary-General Kofi Annan is determined to change this through the United Nations Information Technology Service, which will train large numbers of people to tap into the income enhancing power of the Internet. Annan is also proposing an Internet health network that will provide state-of-the-art medical knowledge to 10,000 clinics and hospitals in poor countries.Questions l-5 are based on Passage One. From the passage we may assume that the author______.
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